Equivalents for the General Motors spark plug 12 637 197
The General Motors 12 637 197 spark plug. Find its 5 compatible and interchangeable spark plugs: cross-references for NGK, Bosch, Champion, Denso and every brand.
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5 equivalents compatible with the General Motors 12 637 197 spark plug
No equivalent for this brand selection.
What can replace a General Motors 12 637 197 spark plug?
The General Motors 12 637 197 is interchangeable with: NGK SILZNAR6D9, Champion OE 258, General Motors 1 214 114, Champion RET4WYPBX, General Motors 12 659 684. These spark plugs share the same mounting (thread, seat) and heat range.
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.